Acer Iconia One 8 Service Manual page 19

Start to download: (Shipping image  Factory image )
1. Enter to fastboot mode by fast key, then connect PC by USB cable
2. Connect B1-820 with PC by USB cable, and click the "Phone Flash Tool" icon
Phone Flash program will auto Popup on PC display
Search the unzip image
3.
download image as you need.
location by clicking icon "Browser". After that, click icon "Start to flash" to start
b. First, find the D/L image
b. Start to flash